Thanks OkSixpack and Kusani. The Delta 46-460 is the 100lb one I was considering. I'm 55, and in decent shape that even moving the Jet 120lb one from a table to another one isn't too bad. Lifting it from ground up get's my attention such that I'm questioning if maneuvering it in and out of the 5er basement would be difficult and maybe become very tough on my back as I get older (or maybe accelerate my back getting older :).
I think at this point I'll go with the 75lb Comet2 and put it through it's paces here at home to take advantage of the 30day return policy if I find it lacking.
Kusani - good idea about the dropcloth, thanks.